Semester 1 Final Review

Front

What is correlation in statistics?

Back

Correlation measures the strength and direction of a linear relationship between two variables. A correlation can be positive, negative, or zero.

Front

What does it mean if two variables have no correlation?

Back

It means that there is no predictable relationship between the two variables; changes in one variable do not affect the other.

Front

Write the equation for a horizontal line where the y-value is 1.

Back

The equation is y = 1.

Front

Back

Front

How do you find the slope of a line in a graph?

Back

The slope is calculated as the change in y divided by the change in x (rise/run). It represents the rate of change.

Front

What does a negative slope indicate about a line?

Back

A negative slope indicates that as one variable increases, the other variable decreases.

Front

What is the equation for '12 less than a number is -3'?

Back

The equation is n - 12 = -3.

Front

Back

Add 12 to both sides to find n: n = 9.

Front

What is the meaning of slope in a real-world context?

Back

In a real-world context, slope represents the rate of change of one quantity with respect to another, such as speed or cost over time.

Front

What is the significance of the y-intercept in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis, representing the value of y when x is zero.